Self and- paul p



E. A. GALBRAITH.

Lamp Burner.

Patented June. 23. 1868.

NPETERS, PHON-LITHOGRAPNER. WASHINGTON. D (l @uiten tstrs ligar/zat @frn EDWARD A. GALBRATTH, Or BOSTON, MASSACHUSETTS, ASSIGNOR TO HTM- SELF AND-PAUL P. TODD, OF 4SAMnifniOn.

Leners Param: No. 79,221, and June 23, isos.

IMPROVEMENT 1N LAMP-numana dlgs 'Stterizlt retentit tu im time rtter idg-mut mit uniting tutti tigt samt.

T0 ALL WHOM THESE PRESENTS SHALL' COME:

Be it known-'that I, EDWARD A. GALBRAITH, of Boston, in the county of Suffolk, and State of Massachusetts", have 4inrented certain ncw'and useful Improvements in Lamp-Burners, for burning kerosene or other volatile illuminating-oils; and do hereby declare the following to be a full, clear, and exact description thereof, due reference being had tothe accompanying drawings, makingpart of this specification, and in which- Figures 1 and 2 are vertical sections of a lamp-burner, constructed in accordancerwith the principles of my invention.

Figure 3 is a top view of it, with its conical deiiector removed.

I have had several objects in view in producing the burner in question, one of such objects being to extract and utilize the vaporsarising from the uid withinthe lamp, and by this means not only increasethe illuminating `power of volume of the ame, but do away with the great objection to kerosene-burners, as at present constructed,

of their possibility as well' as liability to explosion by the ignition of these 'vapors within the lamp.

Another object sought in making this invention is to introduce oxygen to the interior of tho fiume at the Vtop of the wick-tube, thus creating perfect combustion of theI oil, and producing a clear andbrilliant flame, but

also preventing to a'great extent the charring or burning of the end of the wick.

Still another object of my present invention is to insulate the conical deecjtor from the body of the burner, for the purpose of preventing radiation of heat from such deilector to the lamp and its contents.

The invention consists,- irst, in applying, within the wick-tubeot a lamp-burner, of a second and auxiliary tube, or two plates, so arranged that two wicks may bevemployed within the primary wick-tube, and upon opposite'sides of the auxiliary tube, the purpose of such auxiliary tube being to allow of the ascent of vapors, from the body of the lamp, upward between the two wicksor two portions of one wick. l

The invention further c onsists in combining with such auxiliary tube or plates, and the primary, two branchpipes or air-ducts, leading from opposite sides of the upper end of the two tubes to the exterior of' the burner, the oxygen admitted through these ducts serving the purpose not only of aiding in a perfect combustion ofthe tluid contained in the lamp, but also, by mixing with the vapors ascending through the auxiliary tube, convert such vapors into an illuminating-gas, the oxygen further having thee'ect of preventing charring of the upper end of the Wick, as before mentioned.

The invention further consists in the interposition 'ofan annulus or strip of India rubber between the conical deector and the body of the burner, by which heating of such burner and the lamp and itsv contents by radiation from the deiiector is prevented.

In the drawings, a denotes a lamp-burner oi" any well-known or proper construction, b being its conical delector, and c its primary wick-tube, such tube being provided with the usual wick-,elevating wheels and shaft.

My invention consists as follows: cZ denotes an arched pipe or conduit, extending laterally through the top of the' wick-tube, and with its extremities extending through opposite sides of the burner. A'vertical opening, e, corresponding in length, or thereabouts, lwith the width of the-interior of the wick-tube, being made centrally in the top of such pipe, cZ,-i`or allowing of the passage of oxygen through the pipe d to the flame.

Depending from the bottom of the pipe d, and centrally of the wick-tube, is a short auxiliary tube or partition,f, which .divides the upper portion of the wick-tube into two parts, and serves the purpose ofvdividing the two wiclis contained in the tube c, and leaving'a space between them for the admission of air issuing from the aperture e ofthe pipe d.

Furthermore, a second pipe or .conduitpg is aiiixed to the lower part of the burner, and alongside ofthe wick-tube, and open-ing into the body of the lamp, such tubo extending some distance up the side ofthe wicktube, and'having two diverging branches, 7L h, communicating with the arched pipe d, upon opposite sides of Inch wick-tube, as represented in g. 1 ofthe drawings.l Y

In operating with the above-described burner, two wicks are to be placed within the tube c, and extended upward and upon opposite sides ofthe air-conduit di Upon inaming, such wicks, a. draught is created through the said conduit d, and n current oioxygen caused to pass through it, and between the two wicks, and into the centre of the 11eme, or betiveen the ilarnes. thus introducing the oxygen at the mostdesirable point, and producing n Home of great brillinncy.

The admission of oxygen at this point also has the e'ect of preventing charting or burning of the wick, to a great extent, and require trimming of it to be done only :it comparatively long intervals oftime.

The vapor contained or forming in the body of the lamp-ebove its supply of oil, will be drawn upward through the condnit g, and into the arched pipe or nir-conduit cl, and combining with the current of oxygen ,passing through it, Awill be converted into gas, and aid in increasing the volume of thc Home, at the same time removing'possibility of explosion ofthe lamp. v l l For the purpose of preventing heating of the lam'p and its contents,zby means of radiation of lient from the conical deector Z1, I interpose between such deiiector and. the body of the burner :in nnnulus or strip, z', oil

India.- rubbelg'm other non-conducting material or compound.

I woiild remark that in place of'two wicks, o'ne wick may beemployed, ,doubled at its middle, :rnd with its two ends inserted within the wick-tube.

I claim as my invention, and desire to secure by Letters Patent of tli'e United States of America- 1. The combination, with the conduit for supplying air tothe 11eme, vof n vnpolwconducting pipe, leading' from the Huid-reservoir of the lamp, und communicating with the said air-conduit, substantially ns and for the Apurposes herein shown and set forth.

2. A lamp-burner, in which thc divided wick-tube, with its double wick, the nir-supplying pipe or conduit, and the vapor-conduit are combined and arranged for jointcperetion, in the manner herein shown and described.

' l EDWARD A. GALBRAITH.

Witnesses FRED.y CURTIS,

EDWARD GRIFFITH, 

